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NN4944
Basic parameters
Double row cylindrical roller bearings
Series
NN4944
Model
Main Size(mm)
220
d
300
D
80
B
2.1
r smin 1
Rated base load
585
Dynamic load Cr/kN
1,300
Static load Cor/kN
59,500
Dynamic load Cr/kgf
132,000
Static load Cor/kgf
Allowable speed(rpm)
1,900
Grease lubrication
2,200
Oil lubrication
Size(mm)
245
Fw
281
Ew
Installation relationship size(mm)
231
d a minmum
238
d b minmum
242
d cmaximum
248
d d minmum
289
Da maximum
289
D b maximum
284
D bminmum
2
r as maximum
Weight(about)kg
15.9
NNU Cylindrical hole
15.2
NNU Tapered hole
15.2
NN Cylindrical hole
14.5
NN Tapered hole
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